Lens



lmwleen7 in ille County ol" B.

l ,which the 'ollo .To @ZZ vmm, may wie f Be ia kno in lmb l, ,l citizen of the United Ulm/"Les,

of Souih Dfrlotu, have iiivei'l and useful lmprovez'neiiii'e Mypresent iiweiiiiioil proved. le e deslgnoilespe lo!) f inoi modifie-ation olone ienlmie of the lem front and. i'eaz faces disclosed. in my Tute/1.1i No. L, April 16, 19W, suoli Change or coiistiiuting 111 comme@ )n wiii ireiiioining features oi lle mi, "l

72313, fio-led stated lens who siilijee matter of this application.

The invention Comiso ally in een tain combinations and u oi inge and prisme oi' piisiiiii'eie if'be on. ille of 'the leiis'by mee-iis of which the light rays are ie'fiueefl, e 1 be clearly Sei, :forth in 'the following :Specicaiioii and. Specifically minted ou* @Le claim.

In y*bhe accompanying drm/'inge lf li we illus-- mated one complete exemple o' the yloyeii cal embodiment dot my im eiiiioii which lios; been constructed :nifl is now in use zie-Joiniing to the inestmode i have so imVei/"m for the pmCi-fol oppi11-a'tioii oi? lle y; eiples 0i' the iiwention,

ln the draw. Figure l is L View in side elevation of much of an aiiiomobile hoodie-lit QoL-- ard type, as is necessary to il r e the application tlieieto of my iixiprovecl .l

Fig. '2 is :L vegicel, tiiensverfse seelzioiiel. View oi the. gloss lerne7 on levee? than than'. shown in l, anni. m-E 0f Fig'. 4.

ifi e iio'izontal, im y'ei-se view. the iene et line Sw-3 Fig. fi. ie le o1" i'ezu" ew oi"A Vil'xe lone, is luiizootol, tioixeyeiee gemmes-ii lze lens uit line 5--5 o' el.. in die pieleiieil ioi'm ille invention i the sliawlzigs, 'which has; 'issifectoiy in :intimi use, ene in connection with a or imm oi' lomp Gesine; l le 5; .ziiiilziizl and Slim' siumliii'ai forms of iieoflligili;

)s il; will. be undersiocl of not lumiinyseli 'to this paii'im i5 employed u@ lie 'ii-ont portion iii?, .lomp mangio Suppoi the glaes lelie (5.: :is @limi/'ii in Eig. il.,i anni the remaining me enlployed. to show in detail 'the fer . i iii@ ioii: oi' outer eide of the lens zu'e oneri eeiiiee oi convex flutes which *i voi'iienlly of the lens, be1i1gj1eiw,.1g e l nos efe' eitliei' eide thereof, Shown Tee m meubel in each p 5 being for alle purpooe of giving :L iiieiiimmi ammini of lighi; anni the fliebi-f u off. ligiii i'ays from ilie :source ofi igjie, boil@ iieeily ahead and laiex'olly. in .my potent miem-eil. to, be vemiezil, eoiivex finies 'Y eoyei the entire iz'ont oi'ee face us5 and my piii'poee eiiminniing l 'liules 'to seem'o e eleaiei; lees i and ieee; i'eiieeced ioiwami. liglil; i emi consequently a moire clearly il@ iiiiefl. and moie ioiTW-aidly exif/ending shiiii: i'liuiiimte the roadway oliieeisly 'while ilie iultefl aieee et ei'tlxei die' ieioia. Zimt iiie iesulibe ilona; inieaefll :we oliumeil is "lolly proven by actual es,

e le so alesigne being now iii. use and i 'bfi A30.

lonfei' porion of the rear o1 iimei`1 ieee oi alie iene .is indicated m5 8 :is e smooth pleno soif-ooe, which poiion maids" i no ilie i'ezii o1 iime? lower poitien a. veiexil panel, Suid flutes im@ face so that the lightl rays are permitted to pass directly through the lens to the refracting flutes or convex faces and the plane panel on the front of the lens Where the rays are evenly distributed in a Auniform beam of light emanating from the lower zone of the lens and-illuminating the area directly ahead and to thev sides of the lamp.

'llhe upper portion of lthe rear face of the' lens is broken up by the presence of a series of. vertically disposed prismatic ribs 9 forming grooves 9 between them, and anotliei series or' horizontally disposed prismatic ribs 10 which provide shoulders with short horizontal faces 1l, and these tivo series ot' ribe form prisms or facets covering the major portion of the rear or inner face of the lensv extending from the top,'andv bounded by the Icurved line l2 at the bottom.'

These prisms form i'eiiracting media for breaking up the light rays emanating 'from the source of light and for preventing upward travel of the light rays, thuseliminating an upward glare or'dazzling light,

While the lower portion of the lens permitsv the passage-of light rays and the partially iiuted vand paneld lfront distributes fromi the lowerl zone of the lensa'light beam for# forth as the end to be attained in my invenj tion, and having thus .fully described the invention, what I clairuis:v A headlight lens having its front or4 outer vertical, panel-like portion, and a series or 'faceivith a centrally disposed, flat surfaced,

'group of vertical, convex flutes disposed at`v either side of said panel-like portion and embracing the remaining areas of said outer face; the rear face of the lens having its lower portion a plane surface, and vertically and horizontally intersecting prismatic ribs forming prisms and covering the upper' or'.

remaining portion of said rear face.

In testimony whereof I affix my signature.

JAMES J. MADDEN. 

